Luis Leitzelar has represented plaintiffs and defendants in complex commercial litigation for 20 years. He has litigated cases to judgment on behalf of individual and corporate clients, particularly in the petrochemical and insurance industries. Mr. Leitzelar has also argued before numerous appellate courts, including the Louisiana courts of appeal and the U.S. Fifth Circuit Court of Appeals.

As trial and appeal counsel, Mr. Leitzelar has successfully defended many cases involving allegations of personal injury, property damage, and economic loss resulting from alleged exposure to toxic substances, and has tackled all phases of complex mass tort litigation, including attempts to certify class actions under state and federal law. In addition, he has advised clients on the effects of federal and state regulations, and has assisted them in permitting, compliance, and other activities required for their operations.

Mr. Leitzelar has served as coverage and defense counsel for a number of insurance company clients and their policyholders. He was appointed and served as liaison counsel in the Superfund and class action proceedings captioned In re: Combustion, Inc., by the Chief Judge in the United States District Court for the Western District of Louisiana, with respect to insurance issues arising from a long-tail chemical exposure due to operation of a waste oil reclamation and disposal facility.